Self-filling pen



' July 3, 1923'. 1,46Q386 H. LEWINSON SELF FILLING PEN Filed April 13,1922 Patented July 3, i923.

SELF-FILLING]- PEN.

Application filed April 13, 1922.

To all whom it may concern.

Be it known that I, HYMAN LEWINSON, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented new and useful Improvements in Self-Filling Pens, of which thefollowing is a specification.

This pen is designed to provide means within the pen itself forconveniently filling the pen. It is desirable that such means seal thepen against any leakage and be so formed as topreclude the chance ofbeing expelled so as to soil the hands of the operator as the pen isbeing filled.

The invention is illustrated in the accompanying drawings as followsFig. 1 shows a central section through the pen with the parts in one ofthe positions assumed in filling.

Fig. 2 a similar view with the parts in another position assumed duringthe filling operation.

Fig. 3 a side elevation of the plunger.

1 marks the en barrel, 2 a closure at the lower end of t e pen carryingthe feeding member 3 in which a pen 4 is mounted.

A plunger 5 has a central opening 6 through it and a surrounding valveseat 7 on its upper face. It is provided with a packing ring 8 whichmakes a closure with the walls of the barrel and also exerts slightfriction with the walls of the barrel. 7

A valve stem 9 extends through the opening 6 and has a stoppin 10 belowthe plunger 5 and is adapted to engage the plunger, A

Valve 11 is formed on the stem above the. plunger and is adapted to makea closure with the seat 7. The stem-9 extends through a closure 12 atthe top of the pen. A handle 13 is screwed to the upper end of the stem.It has a screw-threaded end 14 adapted to screw into threads 15 at theupper end of the barrel. Gaskets 16 are arranged below the screwthreads15 and are compressed as the handle 13 is screwed into place at thecompletion of'the filling movement. The plunger is provided with a cam5. When Serial No. 552,236.

the handle 14 is screwed into the barrel the pin 10 engages the cam 5and moves the plunger axially sufiiciently to open the valve The fillingoperation is as follows: The operator first unscrews the handle. Thismoves the pin 10 oil the cam 5*. He then withdraws the plunger 5 andthen returns it. On the return the valve 11 seats on the stem 7 and thedownward movement of the plunger creates a vacuum. The pen is thendipped into ink and the handle screwed into place. This opens the valve11 and the ink flows into the barrel, the valve 11 remaining in openposition so that the ink may flow out. 5

What I claim as new is 1. In a self-filling pen, the combination of abarrel; a plunger in the barrel; a valve acting on the plunger; a stemextending from the valve towithout the plunger; and means co-acting withthe stem for moving the valve to open position through either rotativeor axial movement of the stem rel- 1 atively to the plunger.

2. In a self-filling pen, the combination of a barrel; a plunger in thebarrel having a passage therethrough and a valve seat thereon; a valveoperating on the seat and opening and closing by a movement toward andfrom the seat; a stem leading from the valve to without the barrel; anddevices for opening the valve on a rotative movement of 5 the stemrelatively to the plunger.

3. In a self-filling pen, the combination of a barrel; a plunger in thebarrel having a passage therethrough and a valve seat thereon facingoutwardly; a valve operating on set my hand.

HYMAN LEwrNsoN.

